SE458644B - ADJUSTING DEVICE FOR PRESSURE ROLLERS IN AN ELECTRONICALLY CONTROLLED FRANKING MACHINE - Google Patents

Description

. ~ «Mwmmnw» "'l« * ¶Üf fi “- 458 644 ~' 10 15 20 25 30 35 the germanent memory 20, the key and read unit 40 and the register are connected to control units 21, 41, 51. These control units 21, 41 , 51 protects the subsequent units 20, 40, S0 against uncontrolled voltages across peripheral conductors 11. They also prevent influence from the counter values entered in the permanent memory 20, whereby reading via the peripheral leads 11 is possible. As a permanent memory 20, read-only memory with battery power in the event of a power failure, a magnetic memory or a memory operating on the basis of charge-carrier displacements, which is electrically erasable, all settlement values are stored in the permanent memory. reading and writing over the microprocessor 10 is controlled by the interconnected control unit 21, while reading out of the memory 20 is only possible via the peripheral conductors 11.

For the introduction of franking values, consignment type and other reading unit 40, unit 41 11. date, there are key and which have a pre-set control. The entry can also take place via the peripheral conductors. The key unit 40, together with the requested data from the program memory 30, acts on the register 50, which controls the setting of the pressure values.

Since the program memory 30 is designed as a permanent working memory, it does not need to be assigned a control unit. The control unit 41 of the key unit 40 monitors the key feeding function and the reading device, and the franking instructions are entered over it. _An additional acknowledgment key *% 2 is used for pressure release when a fixed maximum postage amount is exceeded. Values entered by means of the key unit 40 for setting pressure rollers pass over the microprocessor 10 to the register 50, by which stepper motors S3 are controlled. For the setting of the stepper motors 53, which are unipolar, different controls can be used. a device which according to Fig. 2, of the stepper motors 53 takes place via re Preferably, at which phase setting the grid 50 and a drive stage 52 are used over the inverted and non-inverted outlets A, Ã, B, §, in the register 50. The addressing of the stepper motors 53 is controlled via a clock or activation connection at the register S0. As a result, even the unaffected motors are maintained with their maximum possible torque even during a setting process. in addition, this mode night involves connecting the stepper motors S3 by simple change in the program memory 30 both parallel operation and also control of individual motors.

A further device for setting the stepper motors S3 is shown in Fig. 3. Here the stepper motors S3 operate in parallel operation. There are two drive stages 54 and 55, one, 55, for phase control and another, 54, for motor control. As a result, all stepper motors 53 receive the same phase information via one drive stage SS and the connection and disconnection of the motors to and from the energy source, respectively, takes place preferably via the central connection of the motor in question. In this case, the phase connections are disconnected by means of rectifiers. The stepper motors 53 act as racks for adjusting pressure rollers. These racks are provided with a plurality, for example two, control means, which co-operate with stationary sensors 60. Sou1aWdürmren60 can be used Hall probes, optical units or capacitive sensors.

Fig. 4 shows a matrix formed by avavkàruuna. Å fl ëå flfiflfl ä has an open collector output and a common zero-volt connection. The supply terminals passing across transistors form columns and supply voltage positive supply terminals 61, 62, 63, 64 rows in the matrix. The signal outputs 61, 62, 63, 64 to the microprocessor are interrogated in parallel and according to the position of the control means relative to the sensors 60 or a signal does not appear at the base of one of the transistors. The selection of columns takes place over the transistors 65, 66, 67, over which the supply lines of the sensors 60 are connected. The setting signals are transmitted to the microprocessor 10.

With the key unit, delay times for the processing of these setting signals can be transmitted to the microprocessor 10, so that a displacement of the stamp- »wqn-u-øu-ør-v fl - 458 10 15 644. 4 printing on a franking strip, letter or package is made possible.

By using a microprocessor 10 and inputting corresponding information in the permanent memory 20, additional devices can be connected via the peripheral conductors 11, which make it possible to further rationalize work with the mail. Thus, for example, the franking value setting can be controlled from a scale, and information on pony classification can also be entered by means of an enveloping machine. In addition, consignments can be registered at various cost-bearing locations, journal printing works can keep records of the franking amount used and, if the franking machine is connected to a computer system, statistical evaluations can be carried out.

Claims (10)

458,644 Patent claims Adjusting device for the pressure rollers in an electronically controlled franking machine, characterized in that the accessory comprises step motors (53) for adjusting the pressure rollers and comprises a device (60-67) with sensors (60) for determining the existing phase positions of the step motors (S3). and transmitting the phase positions to a microprocessor (10), and that a register (SO) is provided, which is supplied with data from the microprocessor (10), which data serve for selecting and further phase setting of the stepper motors (53) by means of drive means (52). Adjusting device according to Claim 1, characterized in that in the case of parallel operation of the stepper motors (53), their phase connections are disconnected from one another by means of rectifiers. Adjusting device according to claim 1, characterized in that said sensor (60) consists of a Hall probe with an open collector output. Adjusting device according to Claim 1, characterized in that optical components with an open collector output form sensors (60). 5. Setting device according to claim 1, characterized in that the sensors' (60) are capacitive with an open collector output. Adjustment device according to Claims 1 or 3 to 5, characterized in that the sensors (60) are matrix-shaped connected to one another. Setting device according to Claim 1 or 6, characterized in that the sensors (60) are arranged to be supplied with a positive supply voltage across transistors (65, 66, 67). 8. A setting device according to claim 7, characterized in that the transistors (65, 66, 67) are arranged to select the slots of the current. Adjustment device according to Claim 1, characterized in that the signals on the signal outputs (61-64) of the sensors (60) are transmitted with delay to the microprocessor (10) for the purpose of displacing the print image. Adjusting device according to claim 9, characterized in that it comprises a key unit (40) for controlling the delay time.